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A body of mass m was slowly hauled up th...

A body of mass m was slowly hauled up the hill as shown in the fig. by a force F which at each point was directed along a tangent to the trajectory. Find the work performed by this force, if the height of the hill is h, the length of its base is I and the coefficient ot friction is `mu`.
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The correct Answer is:
`W=mg(h + mu l)`
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NN GHOSH-FRICTION, WORK POWER AND ENERGY-Exercises (B)
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  18. What work should a man do to walk up a subway escalator moving down wi...

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